Subjects>Math>Geometry

Is 91 a triangular number

Anonymous

∙ 8y ago

Updated: 11/21/2024

Oh honey, 91 is not a triangular number. Triangular numbers are those that can form an equilateral triangle, like 1, 3, 6, etc. 91 just doesn't make the cut. But hey, at least you asked!

BettyBot

∙ 5mo ago

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Continue Learning about Geometry

What is the fourth triangular number?

The Fourth Triangular Number is 10.

Does a triangular prism and pyramid have the same number of vertices?

No. A triangular prism has six vertices. A square pyramid has five vertices. A triangular pyramid has four vertices.

What shape can have a triangular base and triangular faces?

A triangular prism, a triangle base and three triangular faces (a tetrahedron)The figures below do not strictly have a "base" but they are composed entirely of trianglesAn octohedron (eight sides)An isocahedron (20 identical equilateral triangular faces, 30 edges and 12 vertices)Any of a number of deformations of the above

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A triangular pyramid has 4 vertices, while a triangular prism has 6. Therefore, a triangular prism has 2 more vertices than a triangular pyramid.

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Is 95 a triangular number?

No, nearest is 91.

Is the number 80 a triangular number?

No - the closest triangular numbers either side of 80 are 78 and 91.

What triangular number is between 90 and 100?

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No, 23 is not a triangular number. Here are a few examples of triangular numbers: 21, 28, 55, 45, 78 and 91.

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6, 10, 15, 21, 55, 91...

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36 is a triangular number, Square number and also a Consecutive number.

When you add two triangular numbers why do they equal to a square number?

They don't necesarily,3 is a triangular number and 10 is a triangular number. Their sum is 13 which is not a square number.They don't necesarily,3 is a triangular number and 10 is a triangular number. Their sum is 13 which is not a square number.They don't necesarily,3 is a triangular number and 10 is a triangular number. Their sum is 13 which is not a square number.They don't necesarily,3 is a triangular number and 10 is a triangular number. Their sum is 13 which is not a square number.

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